Brake-shoe and process of making same.



No. 746,172; PATENTED DEG. 8, 19O3,

W. D. SARGENT. BRAKE SHOE AND PROCESS OP-MAKING SAME.

IIIIIIIIIIIIIIIIIIIIIIIIII 2.

N 0 M 0 D E L.

UNITED STATES Patented December 8, 1903.

PATIENT OFFICE.

WILLIAM DURHAM SARGENT, OF NEW YORK, N. Y., ASSIGNOR TO AMERICAN v BRAKESHOE & FOUNDRY COMPANY, OF NEW YORK, N. Y., A CORPORA TION OF NEWJERSEY.

BRAKE- -SHOE AND PROCESS OF MAKING SAME.

SPECIFICATION forming part of Letters Patent No. 746,172, dated December8, 1903. I

Application filed June 26,1902.

To all whom, it may concern:

Be it known that I, WILLIAM DURHAM SAR- GENT, a citizen of the UnitedStates of America, residing in the city, county, and State of New 5York, have invented certain new and useful Improvements in Brake-Shoesand Processes of Making the Same, of which the following, taken inconnection with the accompanying drawings, is a specification.

The first of the objects of my present in vention is to render theunworn portion of brake shoes, usually discarded, available for re-use,so as to reduce the amount of metal necessary for the construction ofnew shoes.

In carrying out my invention, I first construct a shoe which is providedwith recesses or indentations in the back thereof, extendin g part waythrough the shoe towards the face of the same, say about two-thirds ofthe way, such indentations or recesses bein g preferably narrow towardsthe face side of the shoe, and so disposed that when the shoe is worndown until it is no longer suitable for use the recesses or indentationswill form apertures or holes which will extend entirely through theshoe, and afford means for securing to the worn portion of the shoe anew wearing face or sole, which can be cast upon the same by placing thewornpart or back portion in the mold and pouring the metal for the newsole upon the same.

In order that my improvements may be better understood, I will nowdescribe the same in connection with the accompanying draw- 5 ing,in-which Figure 1 shows a back view of a shoe embodying my improvements;

Figure 2 is a section of the same on the line 2 of Figure 1;

Figure 3 shows a section of the shoe after it is worn down ready to bere-soled; and

Figure 4 shows a shoe constructed from the discarded portion or oldpart-which I shall term the back portionwith the new sole appliedthereto.

As will be observed by examination of the drawings, I provide a shoewhich has recesses or indentations, which I have marked 5, ex-

fierial No. 113,294. (No model.)

tending from the back thereof toward the the steel place as shown inFigures 1 and 2. -5 5 When the shoe is used, the. face thereof wearsaway until the recesses or indentations are reachedby the wheel treadwhen they become holes or apertures, as indicated at 7 in Figure 3.After this, the shoe can be taken and placed in a mold and a new sole,as indicated at 8, cast on the same, the metal of the new sole runninginto the'apertures, as indicated at 9, and by the dovetailed shape ofthe same securing a firm hold on the back portion of the shoe, as willbe apparent without fur ther explanation.

After the new sole, 8, has been worn out, the back may be used stillanother time, and so on almost indefinitely, provided a predeterminedamount of wear is not exceeded.

By the method above described, those portions of the brake shoewhich-are now discarded and sold at the price of scrap, become equallyas valuable as the metal in the new shoes, while, in the case of whatare known as re-inforced or steel back shoes, the most expensive part ofthe shoe, 1'. e. the steel back, being but three sixteenths of an inchthick, and located at the extreme back of the shoe,

can always be saved, and with ordinary care,

embedded as it is in the surrounding cast iron, can be used over andover again without additional expense.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A brake shoe comprising a back or body portion having' perforationstherein and a wearing sole cast upon the face of said body 0 portion andfilling the said perforations, the face of the body portion being groundto the shape of a wheel, substantially as. described.

2. The process of re-soling brake shoes which consists in providing abody with recesses extending from the back toward the face, allowing theshoe to Wear down on the I new Wearing sole upon said Worn shoe,subwheel until said recesses are exposed and then casting upon said bodyportion a new Wearing soleiwhich precisely fits the face of the body andfills the said perforations.

3. The herein described process of making brake shoes consisting offorming a shoe with recess extending from the back toward the face;permitting said shoe to wear back to a re point beyond said recess, andthen casting a stantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing Witnesses:

PAUL CARPENTER, PHILIP J. FINNEGAN.

